Wind slab
- All elevations
CG for 24/1 Unstable windslab on W to E aspects above 800m plus fragile cornices above. Blizzard conditions. Av hazard Moderate.
CG for 24/1 Unstable windslab on W to E aspects above 800m plus fragile cornices above. Blizzard conditions. Av hazard Moderate.
Forecast Snow Stability: New snow and wind transport of existing soft snow cover will form accumulations of weakly bonded windslab in many wind sheltered areas, particularly on North-West to North-East aspects above 800 metres, West and Easterly aspects possibly affected also. Sheltered gullies, scarp slopes, gully exits and steep corrie headwalls will be most affected. Fragile cornices will form above these locations. Blizzard conditions, windward aspects very scoured and icy. The avalanche hazard will be Moderate.
Forecast Weather Influences: The freezing level will lower to around 500 metres before rising and fluctuating around 600 metres. Snow showers mainly from dawn onwards continuing through most of the day. These will be driven on storm force winds, starting as East-South-Easterly veering to West-South-Westerly, gusts reaching 90mph, blizzard conditions. Observed Weather Influences: Overnight isolated showers fell as very light snow mainly above 550 metres. Partly during the morning but precipitation really started at around 11am. falling as light snow mainly above 400 metres. Winds were moderate to strong from a Southerly direction, the freezing level was around 500 metres. ObservedSnowStability: Additional light new snow fell mainly above 550 metres. Snow accumulations are currently not deep but are becoming more widespread and achieving depth particularly in wind sheltered locations. Localised accumulations of windslab are starting to develop in wind sheltered areas mainly on North-West to North-East aspects above 850 metres. Summit gullies and steep corrie headwalls are particularly affected and fragile cornices also developing on similar locations. The avalanche hazard is Low.
Bulletin data: Scottish Avalanche Information Service (via EAWS / avalanche.report)